Greycliff, MT Weather & Growing Conditions
Overnight
52°F
Showers And Thunderstorms
Showers and thunderstorms before 3am, then patchy fog and showers and thunderstorms. Cloudy. Low around 52, with temperatures rising to around 55 overnight. West northwest wind around 3 mph. Chance of precipitation is 100%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Showers And Thunderstorms | 3 mph WNW | 99% |
| Saturday | 58°F | Patchy Fog | 5 to 9 mph NW | 99% |
| Saturday Night | 46°F | Rain Showers | 7 mph WNW | 91% |
| Sunday | 65°F | Rain Showers Likely | 5 mph NW | 63% |
| Sunday Night | 44°F | Partly Cloudy | 3 mph SSE | 4% |
| Monday | 73°F | Sunny | 1 to 5 mph SSE | 1% |
| Monday Night | 46°F | Mostly Clear | 2 to 8 mph SSW | 0% |
| Tuesday | 77°F | Sunny | 3 mph WSW | 0% |
| Tuesday Night | 49°F | Partly Cloudy | 5 mph SSW | 1% |
| Wednesday | 79°F | Sunny | 5 mph W | 5% |
| Wednesday Night | 49°F | Mostly Clear | 6 mph SSW | 5% |
| Thursday | 80°F | Sunny | 6 mph SW | 1% |
| Thursday Night | 50°F | Mostly Clear | 3 to 7 mph S | 1% |
| Friday | 80°F | Mostly Sunny | 6 mph SSW | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Greycliff, MT
Last spring frost
May 14
First fall frost
Sep 26
Growing season
133 days
Hardiness zone
5a
Explore more for Greycliff, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Big Timber, Mt (12.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.